摘要
本文提出了一个考虑在非等温条件下循环硬化行为的温度依赖性的粘塑性本构模型。在该模型中，引入了三个具有不同演化速率的背应力演化方程；对各向同性变形阻力引入了具有先前加载历史和温度历史记忆的演化方程。将本文模型用于１Ｃｒ１８Ｎｉ９Ｔｉ不锈钢的单轴非等温循环加载历史下材料变形行为的本构描述中，其预言结果与实验结果吻合较好，表明该模型能很好地描述材料在非等温条件下的循环变形行为。
A viscoplastic constitutive model for describing effects of temperature history is suggested.In the model,three evolution equations of back stresses with different evolution rates are introduced,and the evolution equations with the memory on the previous loading history and temperature history of the isotropic deformation resistance are proposed.The present model is applied to description of anisothermal cyclic deformation behaviors of 1Cr18Ni9Ti stainless steel,and the predications are in good agreement with the experimental results.It is shown that the model describes the effects of the temperature history under uniaxial cyclic loading very well.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1994年第2期211-214,共4页
Journal of Aerospace Power
基金
国家自然科学资金
